THE OBJECTIVES OF THIS INITIAL REPORT OF A FOUR-YEAR PROJECT WERE (1) TO DEMONSTRATE A METHOD FOR THE PREDICTION AND PREVENTION OF LEARNING DISABILITIES, (2) TO FOSTER UNDERSTANDING OF CHILD DEVELOPMENT AMONG TEACHERS, PARENTS, AND PHYSICIANS. SUBJECTS WERE THE 3 1/2 TO 5 1/2 YEAR OLD CHILDREN OF AN ENTIRE SCHOOL DISTRICT. RESEARCHERS WERE ASSISTED BY PARENTS AND TEACHERS. FIVE TESTS (NAMED AND EVALUATED IN THE REPORT) WERE ADMINISTERED DURING THE SUMMER OF 1966 TO 365 CHILDREN RANDOMLY ASSIGNED TO CONTROL AND EXPERIMENTAL GROUPS. THESE GROUPS WERE FURTHER DESIGNATED WITHIN THEMSELVES ACCORDING TO SEX, AGE, AND SCHOOL EXPERIENCE. TEST RESULTS INDICATED INITIAL SCREENING FOR VISION, HEARING, AND PERCEPTION TO BE HELPFUL IN PREDICTION AND PREVENTION OF LEARNING DISORDERS. ANNUAL RESCREENING WILL BE CONDUCTED FOR 3 YEARS. SUCCEEDING REPORTS WILL FOLLOW. (LG)